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block: sed-opal: Implement IOC_OPAL_REVERT_LSP

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This is used in conjunction with IOC_OPAL_REVERT_TPR to return a drive to
Original Factory State without erasing the data. If IOC_OPAL_REVERT_LSP
is called with opal_revert_lsp.options bit OPAL_PRESERVE set prior
to calling IOC_OPAL_REVERT_TPR, the drive global locking range will not
be erased.

Signed-off-by: Greg Joyce <gjoyce@linux.vnet.ibm.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jonathan Derrick <jonathan.derrick@linux.dev>
Acked-by: Jarkko Sakkinen <jarkko@kernel.org>
Link: https://lore.kernel.org/r/20230721211534.3437070-3-gjoyce@linux.vnet.ibm.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Greg Joyce 2023-07-21 16:15:33 -05:00 • committed by Jens Axboe
parent 9fb10726ec
commit 5c82efc1ae
4 changed files with 56 additions and 0 deletions
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11
include/uapi/linux/sed-opal.h
View file

@ -56,6 +56,10 @@ struct opal_key {
__u8 key[OPAL_KEY_MAX];
};
enum opal_revert_lsp_opts {
OPAL_PRESERVE = 0x01,
};
struct opal_lr_act {
struct opal_key key;
__u32 sum;
@ -178,6 +182,12 @@ struct opal_discovery {
__u64 size;
};
struct opal_revert_lsp {
struct opal_key key;
__u32 options;
__u32 __pad;
};
#define IOC_OPAL_SAVE _IOW('p', 220, struct opal_lock_unlock)
#define IOC_OPAL_LOCK_UNLOCK _IOW('p', 221, struct opal_lock_unlock)
#define IOC_OPAL_TAKE_OWNERSHIP _IOW('p', 222, struct opal_key)
@ -198,5 +208,6 @@ struct opal_discovery {
#define IOC_OPAL_GET_LR_STATUS _IOW('p', 237, struct opal_lr_status)
#define IOC_OPAL_GET_GEOMETRY _IOR('p', 238, struct opal_geometry)
#define IOC_OPAL_DISCOVERY _IOW('p', 239, struct opal_discovery)
#define IOC_OPAL_REVERT_LSP _IOW('p', 240, struct opal_revert_lsp)
#endif /* _UAPI_SED_OPAL_H */